Download BERT 20E1 2.048 Mbps Network Tester

BERT 20E1
2.048 Mbps Network Tester
BERT 20E1
2.048 Mbps Network Tester
■
Complete in-service or out-of-service
testing
■
Continuous testing of up to 8 hours
respectively
■
Automatically recognizes and indicates
received BERT pattern, Framing format
and AMI or HDB3 Line coding
■
Displays all major 2.048 Mbps Network
performance standards
■
User friendly interface simplifies
operation
DESCRIPTION
The BERT-20E1 is a fully-featured comprehensive handheld
2.048 Mbps, E1 Network test set that can be used for
complete in-service or out-of-service stress testing. It is
designed to easily evaluate the integrity, configuration, and
performance of an E1 facility. Designed for ease of use,
even the novice in the field or central office can quickly
become a proficient tester and provide valued
measurements.
■
Single channel insert for BERT patterns and analog tones
■
Single channel analog tone insert for in-service
or out-of-service testing
■
LLB Mode – line loopback mode with error analysis
■
TLB Mode – test loopback mode with error analysis
■
Independent or standard transmitter and receiver
functions
Main features of the product include:
■
Recognizes and indicates received BERT pattern
■
DB-9 Serial Port for field software upgrades
■
Recognizes and displays E1 framing format
■
Handheld, battery-powered
■
Recognizes and displays AMI or HDB3 line coding
■
4X20 LCD high contrast display with EL backlight
■
■
Transmits standard E1 stress patterns
Displays all standard E1 alarm conditions with history
LEDs
■
Two 64-bit user programmable, non-volatile patterns
■
Displays all major E1 performance parameters
■
Fractional (Nx56 and Nx64 kbps) BER testing
■
Measures E1 frequency and level (Vp-p and dB)
■
Performs bit error rate testing (BERT)
■
Displays ABCD signaling bits and Single channel 8-bit
byte data
■
Logic error insert – single and user selectable rate
■
Measures Single channel level and frequency
■
BPV error insert – single and user selectable rate
■
Monitors voice with internal speaker
■
Frame error insert – single and user selectable rate
■
Single Channel DTMF Digit Decode
■
CRC4 error insert
■
Full span primary receiver
BERT 20E1
2.048 Mbps Network Tester
■
Measures clock synchronization problems (bit slips)
■
Round trip loop delay measurement
■
Non-Volatile test set configurations
■
Store and recall four user defined test set configurations
■
Test Summary for “Errored Only” results
Connectors
Receiver (Term/Monitor/Bridge): 75 ohm unbalanced BNC
120 ohm balanced via 6-pin circular DIN (Custom)
Transmitter: 75 ohm unbalanced BNC
120 ohm balanced via 6-pin circular DIN (Custom)
EXT CLOCK IN: 75 ohm BNC
Auxiliary Power: DC power jack (accepts 2.5 mm diameter
female plug with center or tip “+” and outside “-”)
■
Printer port
Receiver
■
Battery condition indicator
■
Weighs less than 2 lbs.
■
Real time clock with day and date
■
Timed or continuous tests
■
G.821 performance analysis
Operating Modes:
■ NORM (Tx follows Rx)
■ AUTO (Auto-Configure Rx. Tx is independent and
is set manually)
■ Nx56 (Channels are configured on a contiguous or
non contiguous basis)
■ Nx64 (Channels are configured on a contiguous or
non contiguous basis)
■ D/I (Half Duplex Drop and Inser. Insert Tone or Datat)
■ LLB (Local Loopback) Thru Mode, Rx data is passed to Tx
without alteration
■ TLB (Remote Loopback) Thru Mode, Rx data is passed to Tx
retimed and BPV’s corrected
■ DLY (Round-Trip Delay)
■ CO64 (64 kbps co-directional interface)
APPLICATIONS
Telco Installation and Maintenance personnel of Private
Networks and Service Providers who are responsible for
turning-up and maintaining 2.048 Mbps, E1 Networks are
perfect candidates for the Megger BERT-20E1. The unit is
also used by end-users (ISPs and VPN) who lease lines
from the telco to verify performance and aid in
troubleshooting when problems arise.
Cellular providers who need to measure network delays
associated with cellular service would also use the BERT-20E1.
The unit’s durable construction and long battery life is
suited for applications in all environments; from the
Exchange to the Field.
SPECIFICATIONS
Physical
Size: 1.75 H x 5 W x 9 D in. (44.45 H x 127 W x 228.6 D mm)
Weight: 0.6Kg (1.32 lbs.)
Environmental
Operating Temperature: -20° to 50° C (-4° to 122° F)
Storage Temperature: -20° to 70° C (-4° to 158° F)
Humidity: 95% maximum, non-condensing
Power
Batteries (rechargeable): (5), 1.2-V, Nickel Metal Hydride
(NiMH); 4 Amp/hr
Battery Life: Approximately 8 hours of continuous operation (in
Monitor mode measuring clock slips, Data Channel Drop on full
speaker volume) with a fully-charged battery.
Battery Fuel Indicator: Green-to-Red Battery Fuel Gauge LED
Bar. Flashing Red on LED Bar indicates approximately 30 minutes
of operation remaining.
Auxiliary Power: 9 VDC, 1500 mA
Input Impedance
■ Bridge = 1.2K ohms
■ Term = 75 ohms and 120 ohms ± 5%
■ Monitor = 75 ohms and 120 ohms ± 5%
Range
■ Bridge = 3 to -40 dB
■ Term = 3 to -43 dB
■ Monitor = Gain of 12dB or 30dB
Compatibility: ITU-T G.703, G.704, G.706, G.823, G.732,
and I.431
ETS 300 011, 300 233, and 300 166
CTR12 and CTR4.
Framing: NONE, PCM30, PCM30C, PCM31 and PCM31C
Line Coding: AMI, HDB3
Test Patterns
PRBS: 27-1, 29-1, 211-1, 215-1, 220-1, 223-1
Word: (2) User Defined 64-bit word, all ONES, all ZEROS, 1:1
RX Status/History Indicators
TEST SUMMARY
■ AMI
■ HDB3
■ FAS SYNC
■ OCTET SYNC
■ MAS SYNC
■ PATTERN SYNC
■ SIGNAL PRESENT
■ OUT OF FRAME
■ PATTERN SYNC LOSS
■ AIS
■ FAS REMOTE ALARM
■ MAS REMOTE ALARM
■ CRC-4 DETECT
■
BERT 20E1
2.048 Mbps Network Tester
Pattern Sync Loss: 100 bit errors in 1000 bits
Pattern Sync Gain: 0 bit errors in N + 1200 bits, N = 20
for 2^15-1, N = pattern length for the other pattern
Signal Present: Absent when 255 consecutive zeros (no pulses)
have been detected
Out of Frame
FAS Level - (3) consecutive incorrect FAS Frames received
CRC4 Level - 915 or more CRC4 code words out of 1000 received
in error
CAS Level - Two consecutive MF alignment words received in
error
Alarm Indication Signal (AIS): Unframed ALL ONES, more than
(2) zero’s in (2) frames (512 bits)
FAS Remote Alarm (RRA): Bit 3 of non-align frame set to zero
for (3) consecutive occasions
MAS Remote Alarm (RDMA): Bit 6 in Timeslot 16 set to zero for
(2) consecutive Multiframes
Timeslot Data Drop: Selected Timeslot to 8 data-bit LEDs
and Speaker
Signaling Types: CCS and CAS
Digit Capture: DTMF
CAS Signaling Bits: A, B, C, D to (4) discrete LED’s
EXT CLOCK IN
Input Impedance: 75 ohms ± 5%
Range: 0 to –43 dB
Compatibility: ITU-T G.703, G.704, G.706, G.823, G.732,
and I.431
ETS 300 011, 300 233, and 300 166
CTR12 and CTR4
Transmitter
Line Code: AMI or HDB3
Framing: NONE, PCM30, PCM30C, PCM31 and PCM31C
Frequency: 2048000 Hz ± 2.5ppm
Test Patterns
PRBS: 27-1, 29-1, 211-1, 215-1, 220-1, 223-1
as per ITU-O.151, O.152, O.153
Word: (2) User Defined 64-bit word, all ONES, all ZEROS, 1:1
Voice Channel Insert: Data Pattern or Tone
Tone Frequency: 404Hz, 1004Hz, 2804Hz, 3-Tone Sweep
Tone Level: +3dB to –50dB in 1 dB increments
Error Insert
■ Single: Bit, BPV, FAS, CRC4
■ Rate:
Bit, BPV, CRC4 (5E-2 to 9E-7);
FAS (1 in 4, 2 in 4, 3 in 4, ALL)
LBO:
dB (+6Vp-p, Mark Level) 120 ohms
dB (+4.74Vp-p Mark Level) 75 ohm
Pulse Shape: Complies with ITU G.703
Jitter Tolerance: Complies with ITU G.823
Results
Display: 4X20 Character LCD Display w/ EL Backlight
Results Type: NORM, SUMMARY, PERFORMANCE
Clock Slips: A positive number indicates that the reference clock
is faster; a negative number indicates that the reference clock is
slower.
Errors: Logic Errors, Logic Error Rate, BPV, BPV Error Rate, FAS
Errors, CRC Errors, CRC Error Rate, E-Bit Errors, Errored Seconds,
Error Free Seconds, Error Free Seconds %, Severely Errored
Seconds
Maximum count: 2.8147E14
Signal: E1 FREQ; E1 LEVEL (p-p)
TS/Channel Freq.; TS/Channel Level
DTMF Capture Buffer: 16 digits
E1 Frequency Accuracy: ±2.5 ppm, 0 to 40° C
E1 Frequency Resolution: 1 Hz
E1 Frequency Range: 2048000 ± 10000 Hz
E1 Level Accuracy: 6 dB to -16 dB; ±1 dB;
-16 dB to -40 dB; ±3 dB
E1 Level Range: 6 dB to -40 dB
TS/Channel Frequency Accuracy: ±1.5 Hz
TS/Channel Level Accuracy: ±0.5 dB
Co-directional Interface
Transmitter
Rate: 64Kbps
Connector: 120 ohm Balanced via 6-pin circular DIN
Line Code: As per ITU-T G.703 section 1.2.1.1.5 (Reference 1)
Clock Source: Recover Timing (Rx), Internal (INT)
and External (EXT)
Internal Clock Accuracy: 5 ppm
External Clock: 2.048MHz Clock complying with ITU-T G.703
Section 10 (reference 1)
Error Insertion: Bit
Rate: Single and 5E-2 to 1E-7
Receiver
Rate: 64Kbps
Connector: 120 ohm Balanced via 6-pin circular DIN
Line Code: As per ITU-T G.703 section 1.2.1.1.5 (Reference 1)
Alarms detected: Signal Loss, Octet Sync Loss and Pattern Loss
Measurement results: Bit Error Count
ORDERING INFORMATION
Item (Qty)
BERT-20E1 2.048 Mbps Network Tester
Cat. No.
BERT-20E1
Included Accessories
Rubber Holster
5410-381
Holster Stand
5410-379
(2) Test lead 75 ohm BNC to BNC 1.25 m
6180-450
E1 Basics/Product Presentation CD
6111-703
AC to DC Charger
6180-451
Carry Bag
6420-139
User Manual
6172-871
Optional Accessories
Test lead 75 ohm BNC to BT43, 1.25 m
6220-774
Test lead 120 ohm HIROSE to Bantam, 1.25 m
6220-775
Test lead 120 ohm HIROSE to RJ45, 1.25 m
6220-776
Test lead 120 ohm HIROSE to
4 mm jack, 1.25 m
6220-786
Test lead 120 ohm HIROSE to
mini grabber, 1.25 m
6220-788
BERT 20E1
2.048 Mbps Network Tester
UK
Archcliffe Road, Dover
CT17 9EN England
T (0) 1 304 502101
F (0) 1 304 207342
UNITED STATES
4271 Bronze Way
Dallas, TX 75237-1088 USA
T 1 800 723 2861
T 1 214 333 3201
F 1 214 331 7399
OTHER TECHNICAL SALES OFFICES
Norristown USA, Toronto CANADA,
Mumbai INDIA, Trappes FRANCE,
Sydney AUSTRALIA, Madrid SPAIN
and The Kingdom of BAHRAIN.
ISO STATEMENT
Registered to ISO 9001:1994 Reg no. Q 09250
Registered to ISO 14001 Reg no. EMS 61597
20E1_DS_en_V12
www.megger.com
Megger is a registered trademark